<template>
  <div>
    <city-header></city-header>
    <city-search :cities="cities"></city-search>
    <city-list
      :cities="cities"
      :hot="hotCities"
      :letter="letter" > //handleLetterChange传来的letter
      ></city-list>
    <city-alphabet
      :cities="cities"
      @change="handleLetterChange"
    ></city-alphabet>
  </div>
</template>

<script>
import CityHeader from './components/Header'
import CitySearch from './components/Search'
import CityList from './components/List'
import CityAlphabet from './components/Alphabet'
import axios from 'axios'

export default {
  name: "City",
  components:{
    CityHeader,
    CitySearch,
    CityList,
    CityAlphabet
  },
  data () {
    return {
      cities: {}, //cities一开始空，ajax获取数据后才不空
      hotCities: [],
      letter:''
    }
  },
  methods:{
    getCityInfo (){
      axios.get('/api/city.json')
      .then(this.handleGetCityInfoSucc)
    },
    handleGetCityInfoSucc (res) {
      res = res.data
      if (res.ret && res.data) {
        const data = res.data
        this.cities = data.cities
        this.hotCities = data.hotCities
      }
    },
    //City这边接受Alphabet传来的letter
    handleLetterChange (letter) {
      this.letter = letter
    }
  },
  mounted () {
    this.getCityInfo()
  }
}
</script>

<style lang="stylus" scoped>


</style>
